After Alexander Zverev swept Carlos Alcaraz he praised the Spaniard as a future Top 10 force.
Stefanos Tsitsipas cites young stars who will emerge as future rivals.
The Russians are running hot on the doubles court as well.
The 24-year-old announced the news on Instagram.
Alexander Zverev asserts ATP rankings system is absurd.
For the first time since 2005 a man not named Djokovic, Nadal, Federer or Murray is world No. 2.
"I'm going to keep pushing and see what's possible," says former world No. 1.
